21531218

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{13177}}^1$

素因数の和:13241

約数の個数: 16

約数和(自身を含む): 34789920

約数和(自身を除く): 13258702

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 13177, 26354, 250363, 500726, 566611, 1133222, 10765609, 21531218]

約数ペア:

[(1, 21531218), (2, 10765609), (19, 1133222), (38, 566611), (43, 500726), (86, 250363), (817, 26354), (1634, 13177)]